Results 31 to 40 of about 111,632 (351)

Discovery of a nearby young brown dwarf binary candidate [PDF]

, 2010
In near-infrared NaCo observations of the young brown dwarf 2MASS J0041353-562112, we discovered a companion a little less than a magnitude fainter than the primary.
A. Reiners, A. Seifahrt, Close, Cruz, Dahn, Diolaiti, Faherty, Fischer, Hawley, Lenzen, Phan Bao, Phan Bao, Reiners, Reiners, S. Dreizler, Skrutskie, West   +16 more
core   +1 more source

Brown Dwarfs

, 1998
After a discussion of the physical processes in brown dwarfs, we present a complete, precise definition of brown dwarfs and of planets inspired by the internal physics of objects between 0.1 and 0.001 M_sun. We discuss observational techniques for characterizing low-luminosity objects as brown dwarfs, including the use of the lithium test and cooling ...
Oppenheimer, Ben R., Kulkarni, S. R., Stauffer, John R.   +2 more
openaire   +2 more sources

HIP 33609 b: An Eccentric Brown Dwarf Transiting a V = 7.3 Rapidly Rotating B Star

The Astronomical Journal, 2023
We present the discovery and characterization of HIP 33609 b, a transiting warm brown dwarf orbiting a late B star, discovered by NASA's Transiting Exoplanet Survey Satellite as TOI-588 b. HIP 33609 b is a large ( R _b = ${1.580}_{-0.070}^{+0.074}$ R _J )
Noah Vowell, Joseph E. Rodriguez, Samuel N. Quinn, George Zhou, Andrew Vanderburg, Andrew W. Mann, Matthew J. Hooton, Keivan G. Stassun, Saburo Howard, Allyson Bieryla, David W. Latham, Steve B. Howell, Tristan Guillot, Carl Ziegler, Karen A. Collins, Theron W. Carmichael, Jon M. Jenkins, Avi Shporer, Lyu ABE, Philippe Bendjoya, Jonathan L. Bush, Marco Buttu, Kevin I. Collins, Jason D. Eastman, Matthew J. Fields, Thomas Gasparetto, Maximilian N. Günther, Veselin B. Kostov, Adam L. Kraus, Kathryn V. Lester, Alan M. Levine, Colin Littlefield, Wenceslas Marie-Sainte, Djamel Mékarnia, Hugh P. Osborn, David Rapetti, George R. Ricker, S. Seager, Ramotholo Sefako, Gregor Srdoc, Olga Suarez, Guillermo Torres, Amaury H. M. J. Triaud, R. Vanderspek, Joshua N. Winn   +44 more
doaj   +1 more source

CARMA interferometric observations of 2MASS J044427+2512: the first spatially resolved observations of thermal emission of a brown dwarf disk [PDF]

, 2013
We present CARMA 1.3 mm continuum data of the disk surrounding the young brown dwarf 2MASS J044427+2512 in the Taurus molecular cloud. The high angular resolution of the CARMA observations (0.16 arcsec) allows us to spatially resolve for the first time ...
Carpenter, J. M., Isella, A., Ricci, L., Testi, L.   +3 more
core   +2 more sources

Brown dwarfs in retrogradely precessing cataclysmic variables?

EPJ Web of Conferences, 2011
We compare Smoothed Particle Hydrodynamic simulations of retrogradely precessing accretion disks that have a white dwarf primary and a main sequence secondary with observational data and with theory on retrograde precession via tidal torques like those ...
Martin E.L., Deshpande R., Montgomery M.M.   +2 more
doaj   +1 more source

JWST/NIRCam Discovery of the First Y+Y Brown Dwarf Binary: WISE J033605.05–014350.4

The Astrophysical Journal Letters, 2023
We report the discovery of the first brown dwarf binary system with a Y dwarf primary, WISE J033605.05−014350.4, observed with NIRCam on JWST with the F150W and F480M filters.
Per Calissendorff, Matthew De Furio, Michael Meyer, Loïc Albert, Christian Aganze, Mohamad Ali-Dib, Daniella C. Bardalez Gagliuffi, Frederique Baron, Charles A. Beichman, Adam J. Burgasser, Michael C. Cushing, Jacqueline Kelly Faherty, Clémence Fontanive, Christopher R. Gelino, John E. Gizis, Alexandra Z. Greenbaum, J. Davy Kirkpatrick, Sandy K. Leggett, Frantz Martinache, David Mary, Mamadou N’Diaye, Benjamin J. S. Pope, Thomas Roellig, Johannes Sahlmann, Anand Sivaramakrishnan, Daniel Peter Thorngren, Marie Ygouf, Thomas Vandal   +27 more
doaj   +1 more source

Interactions between brown-dwarf binaries and Sun-like stars

, 2012
Several mechanisms have been proposed for the formation of brown dwarfs, but there is as yet no consensus as to which -- if any -- are operative in nature. Any theory of brown dwarf formation must explain the observed statistics of brown dwarfs.
A. Natta, A. P. Whitworth, A. Toomre, A.J. Burgasser, A.J. Burgasser, A.J. Maury, A.P. Whitworth, A.P. Whitworth, A.P. Whitworth, B. Reipurth, C. McCarthy, C.F. Gammie, C.R. Gelino, D. Stamatellos, D. Stamatellos, D. Stamatellos, D. Stamatellos, D. Stamatellos, E. Moraux, E.T. Whelan, F. Comerón, H. Bouy, I. Thies, I. Thies, I.N. Reid, J. Sahlmann, J.K. Faherty, J.K. Faherty, K. Todorov, K.L. Luhman, K.L. Luhman, K.L. Luhman, L.M. Close, M. Ahmic, M. Kaplan, M.R. Bate, M.R. Bate, M.R. Bate, N. Lodieu, P. Girichidis, P. Hennebelle, P. Hennebelle, P. Padoan, R. Rebolo, S. Mohanty, S.K. Walch, S.P. Goodwin, S.P. Goodwin, S.S. Kumar, S.S.R. Offner, S.S.R. Offner, T. Nakajima   +51 more
core   +1 more source

OGLE-2016-BLG-0693LB: Probing the Brown Dwarf Desert with Microlensing

, 2017
We present an analysis of microlensing event OGLE-2016-BLG-0693, based on the survey-only microlensing observations by the OGLE and KMTNet groups. In order to analyze the light curve, we consider the effects of parallax, orbital motion, and baseline ...
Albrow, M. D., Cha, S. -M., Chung, S. -J., Gould, A., Han, C., Hwang, K. -H., Jung, Y. K., Kim, D. -J., Kim, H. -W., Kim, S. -L., Kozlowski, S., Lee, C. -U., Lee, Y., Mroz, P., Park, B. -G., Pawlak, M., Pietrukowicz, P., Pogge, R. W., Poleski, R., Ryu, Y. -H., Shin, I. -G., Skowron, J., Soszynski, I., Szymanski, M. K., Udalski, A., Ulaczyk, K., Yee, J. C., Zhu, W.   +27 more
core   +1 more source

Spitzer Photometry of WISE-Selected Brown Dwarf and Hyper-Luminous Infrared Galaxy Candidates [PDF]

, 2012
We present Spitzer 3.6 and 4.5 $\mu$m photometry and positions for a sample of 1510 brown dwarf candidates identified by the WISE all-sky survey. Of these, 166 have been spectroscopically classified as objects with spectral types M(1), L(7), T(146), and ...
A. Mainzer, Andrew Blain, Ashby, Bridge, Burgasser, Burgasser, Burgasser, Carol Lonsdale, Carrie R. Bridge, Chao-Wei Tsai, Christopher R. Gelino, Cushing, Cutri, Daniel Stern, Deborah Padgett, Dominic Benford, Edward L. Wright, Eisenhardt, Eisenhardt, Eisenhardt, Emilio Donoso, Epchtein, Faherty, Fazio, Gelino, Gregory Mace, J. Davy Kirkpatrick, Jingwen Wu, Ken Marsh, Kirkpatrick, Kirkpatrick, Kirkpatrick, Kirkpatrick, Kirkpatrick, Lin Yan, Mainzer, Martin Cohen, Metchev, Michael C. Cushing, Michael E. Ressler, Michael F. Skrutskie, Morgan, Peter R. M. Eisenhardt, Roc M. Cutri, Roger L. Griffith, Sara Petty, Skrutskie, Spencer A. Stanford, Stern, Thomas H. Jarrett, Wright, Wright, Wu, York   +53 more
core   +5 more sources

A Small Brown Dwarf in an Aligned Orbit Around a Young, Fully Convective M Star

The Astronomical Journal
A star's spin–orbit angle can give us insight into a system's formation and dynamical history. In this paper, we use MAROON-X observations of the Rossiter–McLaughlin effect to measure the projected obliquity of the LP 261-75 (also known as TOI-1779 ...
Madison Brady, Jacob L. Bean, Gumundur Stefánsson, Nina Brown, Andreas Seifahrt, Ritvik Basant, Tanya Das, Rafael Luque, Julian Stürmer   +8 more
doaj   +1 more source